# -*- encoding:utf-8 -*-
# !/usr/bin/env python
'''
    python-0810-13.py
    ======================
    @descript: 
    @copyright:nnz
    @author:dln
    @date: 2021/8/11 16:42
    @version:v1.0
'''
class A:
    v_01=1    #公有变量
    _v_01=2   #保护变量
    __v_01=3   #私有变量
    pass
print([element for element in dir(A) if not element.startswith('__')])
print(A.v_01,A._v_01)
